| /* |
| * Copyright 2009-2012 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package edu.uci.ics.asterix.event.management; |
| |
| import java.util.Random; |
| import java.util.logging.Logger; |
| |
| public class Randomizer { |
| |
| private static final Logger LOGGER = Logger.getLogger(Randomizer.class |
| .getName()); |
| private static Randomizer INSTANCE; |
| private final Random random; |
| private final int seed; |
| |
| public static Randomizer getInstance(int seed) { |
| if (INSTANCE == null) { |
| INSTANCE = new Randomizer(seed); |
| } |
| return INSTANCE; |
| } |
| |
| public static Randomizer getInstance() { |
| if (INSTANCE == null) { |
| INSTANCE = new Randomizer(); |
| } |
| return INSTANCE; |
| } |
| |
| private Randomizer() { |
| Random rm = new Random(); |
| seed = rm.nextInt(10000); |
| random = new Random(seed); |
| LOGGER.info("SEED:" + seed); |
| } |
| |
| private Randomizer(int seed) { |
| this.seed = seed; |
| random = new Random(seed); |
| LOGGER.info("SEED:" + seed); |
| } |
| |
| public Random getRandom() { |
| return random; |
| } |
| |
| public int getSeed() { |
| return seed; |
| } |
| |
| public int getRandomInt(int min, int max) { |
| return min + random.nextInt(max - min + 1); |
| } |
| } |